摘要
氯代苯酚类物质是环境中对人的健康十分有害的重要难降解污染物,利用光化学技术处理难以降解的含酚废水的研究日益引起重视。以半导体物质(TiO2,WO3,CdS等)作为光敏剂的催化光致降解研究,特别是以TiO2作为催化剂进行氯代苯酚类化合物催化光解的研究取得了一定的进展;而超声和金属络合物、氧化剂等物质的协同作用也是光解处理氯代苯酚化合物的重要研究方向。苯醌类化合物可能是氯代苯酚类物质光降解的中间产物,而其降解最终是苯环被破坏,生成二氧化碳和水。
Chlorophenol is an important environmental pollutant, featuring the difficult degradation. Efforts are made to treat the wastewater containing chlorophenol by the photochemical degradation technique. The possible intermediates derived from the photochemical degradation reaction are mainly benzoquinones, subsequently; the benzene rings in intermediate molecules are destroyed to release carbon dioxide and water. Herein, a short review is made to elucidate the progress on the photochemical degradation of wastewater containing chlorophenol. Semiconductor materials, such as TiO2, WO3 and CdS, are usually employed to act as photosensitizers of photocatalysis degradation, especially TiOz due to its easy preparation, low expense and preferable catalytic behavior. At the same time, some attentions are concentrated on the synergy effects of ultrasonic treatment, metal complex compound and oxidant addition.
出处
《浙江科技学院学报》
CAS
2010年第2期113-119,共7页
Journal of Zhejiang University of Science and Technology
关键词
氯代苯酚
光降解
TIO2
chlorophenol
photochemical degradation
TiO2
